If you’ve recently upgraded to a new iPhone and are wondering how to transfer your eSIM back to your old device, you’re not alone. Many iPhone users switch between devices for various reasons, such as troubleshooting, trading in a new phone, or simply wanting to keep an older phone as a backup. Thankfully, transferring your eSIM is a straightforward process. Here’s a step-by-step guide to help you transfer your eSIM back to your old iPhone.

What Is eSIM and Why Transfer It?
An eSIM (embedded SIM) is a digital SIM card that allows you to activate a cellular plan without needing a physical SIM card. It’s becoming more popular because it eliminates the need for a physical SIM, making it easier to switch carriers, change plans, or use multiple phone numbers on a single device.
If you’ve switched to a new iPhone but want to use your old device, transferring the eSIM back is essential for maintaining cellular connectivity. This can happen for various reasons, including:
- Wanting to use an old iPhone as a backup device
- Switching between two iPhones for troubleshooting
- Traveling and needing to use the old iPhone for local eSIM data plans
Prerequisites for Transferring eSIM
Before you begin, ensure the following:
- Both iPhones Support eSIM: Your old iPhone must support eSIM (iPhone XS and later models typically support eSIM).
- Your Carrier Supports eSIM Transfer: Most modern carriers support eSIM, but it’s always a good idea to double-check with your service provider.
- Wi-Fi Connection: Make sure both phones are connected to a stable Wi-Fi network.
- Apple ID: Your Apple ID should be signed into both devices.
Step-by-Step Guide to Transfer eSIM to Your Old iPhone
Step 1: Remove eSIM from the New iPhone
To transfer your eSIM back to your old device, you’ll first need to remove it from your new iPhone.
- Open the Settings app on your new iPhone.
- Tap on Cellular or Mobile Data.
- Select the plan you want to transfer and tap Remove Cellular Plan.
- Confirm that you want to remove the eSIM from this device.
This step ensures that the eSIM is no longer active on your new iPhone, making it ready for transfer.
Step 2: Set Up eSIM on Your Old iPhone
Now that the eSIM has been removed from the new device, it’s time to set it up on your old iPhone.
- Open the Settings app on your old iPhone.
- Tap Cellular or Mobile Data.
- Tap Add Cellular Plan.
- If you’re transferring an eSIM from the same carrier, your old iPhone may prompt you to sign into your carrier account to authenticate the transfer.
- Alternatively, you may receive a QR code from your carrier to scan or a transfer option via Bluetooth or Wi-Fi.
Follow the on-screen instructions to activate the eSIM on your old device. In some cases, the carrier may require you to contact customer support for assistance, especially if the transfer is not seamless.
Step 3: Confirm eSIM Activation
Once your old iPhone has successfully received the eSIM, you should see your carrier’s name under Cellular or Mobile Data in the settings. Test the connection by making a call or checking your data connectivity.
Troubleshooting Tips
- Carrier Support: If you’re having trouble transferring the eSIM, ensure that your carrier supports eSIM transfers between devices. Some carriers may require a manual activation process or a specific app to make this transition.
- Reboot Devices: If the transfer doesn’t work immediately, try restarting both iPhones to refresh the settings and connections.
- Network Settings: In some cases, you may need to reset your network settings. Go to Settings > General > Reset > Reset Network Settings. This can help fix any connectivity issues after the eSIM transfer.
Final Thoughts
Transferring an eSIM back to an old iPhone is a simple process that can be completed in a few easy steps. Whether you’re troubleshooting an issue or just want to use an old device again, understanding how to transfer your eSIM will save you time and ensure you stay connected without the hassle of physical SIM cards.
Always check with your carrier for any specific instructions or requirements, as the process may vary slightly depending on your service provider and region. By following these steps, you’ll have your old iPhone up and running with your eSIM in no time!










